CN113061400B - Graphene-modified adhesive tape for laser shock peening and preparation method thereof - Google Patents

Graphene-modified adhesive tape for laser shock peening and preparation method thereof Download PDF

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CN113061400B
CN113061400B CN202110380162.2A CN202110380162A CN113061400B CN 113061400 B CN113061400 B CN 113061400B CN 202110380162 A CN202110380162 A CN 202110380162A CN 113061400 B CN113061400 B CN 113061400B
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adhesive tape
graphene
coating
laser
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CN113061400A (en
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罗学昆
王欣
王强
宋颖刚
马世成
许春玲
宇波
于洋
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AECC Beijing Institute of Aeronautical Materials
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
    • C—CHEMISTRY; METALLURGY
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    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J107/00—Adhesives based on natural rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
    • C09J109/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/383—Natural or synthetic rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2265—Oxides; Hydroxides of metals of iron
    • C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
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    • C09J2407/00—Presence of natural rubber
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    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/006—Presence of halogenated polymer in the substrate
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  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention belongs to the technical field of part surface treatment, and relates to a graphene modified adhesive tape for laser shock peening and a preparation method thereof; according to the invention, the rubber type pressure-sensitive adhesive is coated on the back surface of the adhesive tape, so that the adhesion force with the surface of a part is improved; spraying a graphene modified coating on the front surface of the adhesive tape, and improving the laser absorption rate through the graphene modified coating; the polyvinyl chloride tape base body with better comprehensive mechanical property improves the damage resistance of laser-induced plasma shock waves and transmits more impact force, thereby generating a higher amplitude and deeper residual pressure stress layer on the surface of the part; the adhesive tape has higher laser energy utilization rate and lower adhesive tape breakage rate than the traditional black adhesive tape; the laser absorption layer coating is coated on the surface of the adhesive tape in a compressed gas driving spraying mode, so that a uniform coating can be obtained on the surface of the adhesive tape, and the uniformity of laser shock strengthening is improved.

Description

Graphene-modified adhesive tape for laser shock peening and preparation method thereof
Technical Field
The invention belongs to the technical field of part surface treatment, and relates to a graphene modified adhesive tape for laser shock peening and a preparation method thereof.
Background
The laser shock peening technology is an advanced surface peening technology, and utilizes the mechanical effect of high-energy plasma shock waves generated by laser induction to enable the surface of a part to generate a plastic deformation layer and a residual pressure stress layer, so that the fatigue performance of the part is improved. The alloy has good high-cycle fatigue performance gain effect, is widely adopted by home and abroad aviation manufacturers, and is applied to the manufacture of various parts.
The laser absorption layer and the coating technology thereof are one of the key technologies of laser shock strengthening, and are related to the quality of the surface of the strengthened part. The laser absorption layer covers the surface of the part, and has three main functions: 1) absorbing laser pulse energy and generating plasma shock waves on the surface of the absorbing layer, 2) blocking the thermal action of the plasma shock waves, and 3) transmitting the force of the plasma shock waves to enable the surface of the material to generate plastic deformation.
Currently, the laser absorption layer is commonly used as an aluminum foil or a black tape. The aluminum foil has a high reflectivity to laser light, and thus the energy utilization rate of laser pulses is low. Therefore, black adhesive tapes are increasingly selected to replace the black adhesive tapes, the material of the black adhesive tapes is usually polyvinyl chloride (PVC), one surface of the black adhesive tape is coated with rubber type pressure sensitive adhesive to improve the viscosity of the black adhesive tape to metal, and the black adhesive tapes have certain good heat insulation and transmission force functions. However, when a black adhesive tape is selected, the laser absorption rate and the rigidity of the adhesive tape material are difficult to obtain, the adhesive tape with high laser absorption rate is generally low in rigidity, the force transmission rate of plasma shock waves is reduced, and the strengthening effect is reduced; the adhesive tape with better rigidity has lower laser absorption rate and low laser energy utilization rate, and can achieve the strengthening effect of high shot blasting strength by using higher laser pulse energy.
Disclosure of Invention
The purpose of the invention is: the graphene modified adhesive tape for laser shock peening and the preparation method thereof are provided, the functional gradient adhesive tape is prepared by the coating and the base tape, the effect of combining high laser absorption rate and impact force transmission is achieved, the laser shock peening effect is improved, and the requirement for improving the fatigue performance of high-quality parts is met.
The technical scheme of the invention is as follows:
a graphene-modified adhesive tape for laser shock peening is characterized in that: the adhesive tape is a polyvinyl chloride adhesive tape, the back of the adhesive tape is coated with rubber pressure-sensitive adhesive, the total thickness is 0.05-1 mm, the adhesiveness to a steel plate is 0.39-0.98 oz./mm, the adhesiveness to a tape base is 0.39-0.98 oz./mm, the maximum elongation is 100-200%, and the breaking strength is 0.47-0.63 lbs/mm; the front surface of the adhesive tape is sprayed with a graphene modified coating, the coating is composed of polyurethane resin, graphene, iron oxide black, a functional assistant and deionized water, and the content of each component is X, Y, Z, R and T, wherein X + Y + Z + R + T is 1, X is 50-70%, Y is 0.1-5%, Z is 10-30%, R is 1-10%, and T is 0-20% by mass. .
The rubber type pressure-sensitive adhesive is composed of natural rubber, styrene butadiene rubber, terpene resin, an anti-aging agent, rosin ester, glycerol and a gasoline-toluene mixed solvent.
The polyurethane resin is aqueous emulsion, and the solid content is 10-60% (mass percentage).
The graphene is a powder or comprises an aqueous graphene slurry.
The functional auxiliary agent is sodium stearate or sodium oleate.
The curing time of the graphene modified coating is 1-3 hours at normal temperature and 0.5-2 hours at 50-80 ℃.
The laser energy utilization rate of the graphene modified coating is higher than that of a traditional black adhesive tape, and the arc height value of an Almen test piece processed under the same laser process parameters is 10% or more larger than that of the traditional black adhesive tape.
The graphene-modified laser shock peening adhesive tape has the elongation of 100-200% and the laser power density of 8-10 GW/cm2The breakage rate under the condition that the lapping rate is critical 0 percent is not more than 0.1 percent
A preparation method of graphene-modified adhesive tape for laser shock peening is characterized by comprising the following steps: the graphene-modified adhesive tape for laser shock peening is prepared by the following steps:
1. preparing an adhesive tape: fixing the polyvinyl chloride adhesive tape with the length of 2m and the width of 1m, and keeping the polyvinyl chloride adhesive tape flat.
2. Preparing the coating: adding graphene into deionized water to form graphene slurry, then ultrasonically dispersing iron oxide black in the graphene slurry uniformly, then adding the mixed slurry into aqueous polyurethane resin emulsion, dispersing uniformly at a high speed, adding a functional assistant, and dispersing uniformly again to prepare the coating.
3. Coating of the coating: the coating is evenly coated on the prepared polyvinyl chloride adhesive tape, the flow rate is 10 ml/min-500 ml/min, the distance between a spray gun and the surface of the polyvinyl chloride adhesive tape is 10 cm-30 cm, and the thickness of the coating is 20 mu m-200 mu m after drying.
4, cutting the adhesive tape: and cutting the adhesive tape into required size according to the size of the surface area of the part to be subjected to laser shock peening.
The coating adopts a compressed air-driven spraying mode.
The invention has the advantages that:
the invention provides a graphene modified adhesive tape for laser shock reinforcement and a preparation method thereof, wherein the back of the adhesive tape is coated with a rubber pressure-sensitive adhesive to improve the adhesion with the surface of a part; spraying a graphene modified coating on the front surface of the adhesive tape, and improving the laser absorption rate through the graphene modified coating; the polyvinyl chloride tape base body with better comprehensive mechanical property improves the damage resistance of laser-induced plasma shock waves and transmits more impact force, thereby generating a higher-amplitude and deeper residual pressure stress layer on the surface of the part. The adhesive tape has higher laser energy utilization rate and lower adhesive tape breakage rate than the traditional black adhesive tape.
Secondly, the laser absorption layer coating is coated on the surface of the adhesive tape in a compressed gas driving spraying mode, so that a uniform coating can be obtained on the surface of the adhesive tape, and the uniformity of laser shock strengthening is improved.
Drawings
FIG. 1 shows that the laser power density of the black adhesive tape, the aluminum foil and the adhesive tape of the patent is 10GW/cm2And the breakage rate after impacting 1000 points under the condition that the lapping rate is critical 0 percent
FIG. 2 shows the distribution of residual compressive stress on the surface of titanium alloy after strengthened by black adhesive tape, the coating of this patent and aluminum foil under the same laser process parameters
Detailed Description
The invention is further described below with reference to the accompanying drawings:
a graphene-modified adhesive tape for laser shock reinforcement is a polyvinyl chloride adhesive tape, the back of which is coated with a rubber pressure-sensitive adhesive, wherein the pressure-sensitive adhesive is composed of natural rubber, styrene-butadiene rubber, terpene resin, an anti-aging agent, rosin ester, glycerol and a gasoline-toluene mixed solvent; the total thickness of the polyvinyl chloride adhesive tape and the rubber pressure-sensitive adhesive is 0.05-1 mm, the adhesiveness to a steel plate is 0.39-0.98 oz./mm, the adhesiveness to a tape base is 0.39-0.98 oz./mm, the maximum elongation is 100-200%, and the breaking strength is 0.47-0.63 lbs/mm;
the front surface of the polyvinyl chloride adhesive tape is sprayed with a graphene modified coating, the coating is composed of polyurethane resin, graphene, iron oxide black, a functional assistant and deionized water, the content of each component is X, Y, Z, R and T, wherein X + Y + Z + R + T is 1, X is 50-70%, Y is 0.1-5%, Z is 10-30%, R is 1-10%, and T is 0-20%, all of which are mass percentages. In addition, the polyurethane resin is aqueous emulsion, and the solid content is 10 to 60 percent (mass percentage); the graphene is powder or comprises aqueous graphene slurry; the functional assistant is sodium stearate or sodium oleate. The curing time of the graphene modified coating is 1-3 hours at normal temperature and 0.5-2 hours at 50-80 ℃, and the laser energy utilization rate of the graphene modified coating is 10% or more larger than that of the traditional black adhesive tape in terms of the arc height value of an Almen test piece under the same laser process parameters.
The graphene-modified adhesive tape for laser shock peening prepared by the method has the elongation of 100-200%, and the laser power density of 8-10 GW/cm2And the breakage rate under the condition that the lapping rate is critical 0% is not more than 0.1%.
The graphene-modified adhesive tape for laser shock peening is prepared by the following steps:
1. preparing an adhesive tape: fixing the polyvinyl chloride adhesive tape with the length of 2m and the width of 1m, and keeping the polyvinyl chloride adhesive tape flat.
2. Preparing the coating: adding graphene into deionized water to form graphene slurry, then ultrasonically dispersing iron oxide black in the graphene slurry uniformly, then adding the mixed slurry into an aqueous polyurethane resin emulsion, dispersing uniformly at a high speed, adding a functional assistant, and dispersing uniformly again to prepare the coating.
3. Coating of the coating: the coating is uniformly coated on the prepared polyvinyl chloride adhesive tape by adopting a compressed air driven spraying mode, the flow rate is 10 ml/min-500 ml/min, the distance between a spray gun and the surface of the polyvinyl chloride adhesive tape is 10 cm-30 cm, and the thickness of the coating is 20 mu m-200 mu m after drying.
4, cutting the adhesive tape: and cutting the adhesive tape into required size according to the size of the surface area of the part to be subjected to laser shock peening.
The working principle of the invention is as follows:
the invention prepares an integrated composite material strip with excellent optical and mechanical properties. The matrix adhesive tape has good ductility and breaking strength, can resist severe plastic deformation generated by laser-induced plasma shock waves, prevents the adhesive tape from being damaged, and ensures the process reliability; the coating layer on the front side of the adhesive tape obviously improves the utilization rate of laser pulse energy by utilizing the interaction of graphene and high-energy short pulse laser, generates higher impact wave pressure, generates higher amplitude and deep residual compressive stress distribution on the surface layer of a metal material, and improves the surface strengthening effect; the back of the adhesive tape is coated with rubber type pressure sensitive adhesive to improve the adhesion with the surface of the part. The coating is coated on the surface of the adhesive tape by adopting a compressed gas driven spraying mode, the method is simple and efficient, and uniform coating can be obtained on the surface of the adhesive tape without additionally improving adhesive tape manufacturing equipment. The composite material adhesive tape prepared by the method has high laser absorption rate and tearing resistance, improves the laser shock strengthening effect, improves the process reliability and provides material conditions for obtaining high-quality parts.
Example 1
A graphene modified adhesive tape for laser shock reinforcement is characterized in that an adhesive tape substrate is made of polyvinyl chloride, and the back of the adhesive tape substrate is coated with rubber pressure-sensitive adhesive consisting of natural rubber, styrene-butadiene rubber, terpene resin, an anti-aging agent, rosin ester, glycerol and a gasoline-toluene mixed solvent. The total thickness of the polyvinyl chloride adhesive tape and the rubber pressure-sensitive adhesive is about 1mm, the viscosity to a steel plate is 0.98oz./mm, the viscosity to a tape base is 0.98oz./mm, the maximum elongation is 200%, and the breaking strength is 0.63 lbs/mm; the front surface of the adhesive tape is sprayed with a graphene modified coating, and the coating comprises 70% by mass of polyurethane resin, 5% by mass of graphene powder, 10% by mass of black iron oxide, 5% by mass of sodium stearate and 10% by mass of deionized water.
The curing time of the graphene modified coating is 1h at normal temperature, 1h at 50 ℃ and 0.5h at 80 ℃. Compared with the traditional black adhesive tape, the graphene modified coating has the advantage that the laser energy utilization rate is 15% higher than that of the Almen test piece arc height value under the same laser technological parameters.
The graphene-modified adhesive tape for laser shock peening has an elongation of 200% and a laser power density of 10GW/cm2The breakage rate was 0% under the condition that the lap joint rate was 0%, as shown in fig. 1. In addition, as shown in fig. 2, after the graphene-modified tape for laser shock peening is used for strengthening, the depth of the layer of the residual compressive stress generated on the surface of the titanium alloy reaches 0.95mm, which is 32% greater than the depth (0.72mm) of the conventional black tape and 58% greater than the depth (0.6mm) of the aluminum foil.
The graphene-modified adhesive tape for laser shock peening is prepared by the following steps:
1. preparing an adhesive tape: fixing the polyvinyl chloride adhesive tape with the length of 2m and the width of 1m, and keeping the polyvinyl chloride adhesive tape flat.
2. Preparing the coating: adding graphene into deionized water to form graphene slurry, then ultrasonically dispersing iron oxide black in the graphene slurry uniformly, then adding the mixed slurry into aqueous polyurethane resin emulsion, dispersing uniformly at a high speed, adding a functional assistant, and dispersing uniformly again to prepare the coating.
3. Coating of the coating: the coating is uniformly coated on the prepared polyvinyl chloride adhesive tape by adopting a compressed air driven spraying mode, the flow rate is 500ml/min, the distance between a spray gun and the surface of the polyvinyl chloride adhesive tape is 30cm, and the thickness of the coating is 200 mu m after the coating is dried at room temperature.
4, cutting the adhesive tape: and cutting the adhesive tape into required size according to the size of the surface area of the part to be subjected to laser shock peening.
Example 2
The adhesive tape is coated with a graphene modified coating on the surface, the coating is composed of polyurethane resin, graphene, iron oxide black, functional additives and deionized water, the content of each component is X, Y, Z, R and T, wherein X is 55%, Y is 5%, Z is 10%, R is 10%, and T is 20% by mass. The polyurethane resin is aqueous emulsion, and the solid content is 30 percent (mass percentage). The graphene is powder. The functional auxiliary agent is sodium oleate. Compared with the traditional black adhesive tape, the graphene modified coating has the advantage that the laser energy utilization rate is about 20% of the arc height value of the Almen test piece under the same laser process parameters.
The elongation of the graphene-modified adhesive tape for laser shock peening is 100%, and the laser power density is 10GW/cm2And a breakage rate of 0% under the condition that the lap joint rate is 0%.
Coating of the coating: the coating is uniformly coated on the prepared polyvinyl chloride adhesive tape by adopting a compressed air driven spraying mode, the flow rate is 10ml/min, the distance between a spray gun and the surface of the polyvinyl chloride adhesive tape is 10cm, and the thickness of the coating is 50 micrometers after drying at room temperature.

Claims (7)

1. A graphene-modified adhesive tape for laser shock peening is characterized in that: the adhesive tape is a polyvinyl chloride adhesive tape, the back of the adhesive tape is coated with rubber pressure-sensitive adhesive, the total thickness is 0.05-1 mm, the adhesiveness to a steel plate is 0.39-0.98 oz./mm, the adhesiveness to a tape base is 0.39-0.98 oz./mm, the maximum elongation is 100-200%, and the breaking strength is 0.47-0.63 lbs/mm; the front surface is sprayed with a graphene modified coating, the coating is composed of polyurethane resin, graphene, iron oxide black, a functional assistant and deionized water, the content of each component is X, Y, Z, R and T, wherein X + Y + Z + R + T is 1, X is 50% -70%, Y is 0.1% -5%, Z is 10% -30%, R is 1% -10%, and T is 0% -20%, which are mass percentages;
the rubber type pressure-sensitive adhesive is composed of natural rubber, styrene-butadiene rubber, terpene resin, an anti-aging agent, rosin ester, glycerol and a gasoline-toluene mixed solvent;
the polyurethane resin is aqueous emulsion, and the solid content in percentage by mass is 10-60%;
the functional auxiliary agent is sodium stearate or sodium oleate.
2. The graphene-modified adhesive tape for laser shock peening according to claim 1, characterized in that: the graphene is a powder or comprises an aqueous graphene slurry.
3. The graphene-modified adhesive tape for laser shock peening according to claim 1, characterized in that: the curing time of the graphene modified coating is 1-3 hours at normal temperature and 0.5-2 hours at 50-80 ℃.
4. The graphene-modified adhesive tape for laser shock peening according to claim 1, characterized in that: the laser energy utilization rate of the graphene modified coating is higher than that of a traditional black adhesive tape by 10% or more, and the arc height value of an Almen test piece processed under the same laser process parameters is larger than or equal to 10% than that of the traditional black adhesive tape.
5. The graphene-modified adhesive tape for laser shock peening according to claim 1, characterized in that: the laser power density of the adhesive tape is 8-10 GW/cm2The breakage rate under the condition that the lapping rate is critical 0% is not more than 0.1%.
6. The method for preparing the graphene-modified adhesive tape for laser shock peening according to any one of claims 1 to 5, wherein: the method comprises the following steps:
9.1, preparation of adhesive tape: fixing the polyvinyl chloride adhesive tape with the length of 2m and the width of 1m, and keeping the polyvinyl chloride adhesive tape flat;
9.2, preparing the coating: adding graphene into deionized water to form graphene slurry, then ultrasonically dispersing iron oxide black in the graphene slurry uniformly, then adding the mixed slurry into aqueous polyurethane resin emulsion, dispersing uniformly at a high speed, adding a functional assistant, and dispersing uniformly again to prepare a coating;
9.3, coating of the coating: uniformly coating the coating on the prepared polyvinyl chloride adhesive tape, wherein the flow rate is 10 ml/min-500 ml/min, the distance between a spray gun and the surface of the polyvinyl chloride adhesive tape is 10 cm-30 cm, and the thickness of the coating is 20 mu m-200 mu m after drying;
9.4 cutting the adhesive tape: and cutting the adhesive tape into required size according to the size of the surface area of the part to be subjected to laser shock peening.
7. The method for preparing the graphene-modified adhesive tape for laser shock peening according to claim 6, wherein: and 9.3, coating the coating by adopting a compressed air driven spraying mode.
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CN114507480A (en) * 2022-03-16 2022-05-17 上海商寰航空科技有限公司 Fireproof sealing anticorrosive adhesive tape for aviation equipment and preparation method thereof
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